On Fri, 19 May 2023 20:49:47 +0000 Qing Zhao via Gcc-patches <gcc-patches@gcc.gnu.org> wrote:
> GCC extension accepts the case when a struct with a flexible array member > is embedded into another struct or union (possibly recursively). Do you mean TYPE_TRAILING_FLEXARRAY()? > diff --git a/gcc/tree.h b/gcc/tree.h > index 0b72663e6a1..237644e788e 100644 > --- a/gcc/tree.h > +++ b/gcc/tree.h > @@ -786,7 +786,12 @@ extern void omp_clause_range_check_failed (const_tree, > const char *, int, > (...) prototype, where arguments can be accessed with va_start and > va_arg), as opposed to an unprototyped function. */ > #define TYPE_NO_NAMED_ARGS_STDARG_P(NODE) \ > - (TYPE_CHECK (NODE)->type_common.no_named_args_stdarg_p) > + (FUNC_OR_METHOD_CHECK (NODE)->type_common.no_named_args_stdarg_p) > + > +/* True if this RECORD_TYPE or UNION_TYPE includes a flexible array member > + at the last field recursively. */ > +#define TYPE_INCLUDE_FLEXARRAY(NODE) \ > + (RECORD_OR_UNION_CHECK (NODE)->type_common.no_named_args_stdarg_p) Until i read the description above i read TYPE_INCLUDE_FLEXARRAY as an option to include or not include something. The description hints more at TYPE_INCLUDES_FLEXARRAY (with an S) to be a type which has at least one member which has a trailing flexible array or which itself has a trailing flexible array. > > /* In an IDENTIFIER_NODE, this means that assemble_name was called with > this string as an argument. */
